Treatment of Pulsating White Dwarfs including General Relativistic Effects.
Pulsating very dense white dwarfs models noting general relativity
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Pulsating very dense white dwarfs models noting general relativity
Auroral pulsation observed by Aerobee rocket instruments and ground multichannel photometer indicating primarily temporal fluctuation
Massive homogeneous star pulsation stability, determining maximum mass by opacity formula
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X ray sources pulsation limits and locations determination by rocket-borne rotating modulation collimator
Unsteady gas pulsations in compliant tube, predicting pressure amplitude extremum as function of mean flow by linear theory with frictional effect
A number of total-pressure tubes were tested in a non-steady flow generator in which the fraction of period that pressure is a maximum is approximately 0.8, thereby simulating turbomachine-type flow conditions. Most of the tubes indicated a pressure which was higher than the true average. Organ-pipe resonance which further increased the indicated pressure was encountered within the tubes at discrete frequencies. There was no obvious combination of tube diameter, length, and/or geometry variation used in the tests which resulted in negligible averaging error. A pneumatic-type probe was found to measure true average pressure, and is suggested as a comparison instrument to determine whether nonlinear averaging effects are serious in unknown pulsation profiles. The experiments were performed at a pressure level of 1 bar, for Mach number up to near 1, and frequencies up to 3 kHz.